Internal Combustion Engine. Most engines in road going vehicles are 4-cycle internal combustion gasoline engines.

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5
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1answer
286 views

My brand new bike stopped while running - why? [duplicate]

I purchased a brand new Royal Enfield Classic 350 yesterday. This morning I rode it to my office (around 20 Km), parked in the basement, and in the evening I started to ride home. After 10 Km the ...
7
votes
3answers
1k views

Do valves rotate over time?

As I was doing my valve servicing, one question came to mind: As valves undergo millions of cycles of reciprocating motion, do they actually rotate or is their position relative to the seal fixed? Or ...
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votes
4answers
343 views

Hyper-miling and stress on engine oil

The other time I asked my mechanic, are my tires about needing to be changed? He said, naw, another 8000 miles. After driving 7000 miles, I asked another mechanic who again said, long way to go. ...
2
votes
1answer
101 views

How much force is needed to push a piston down? [closed]

Combustion from fuel and air is used to push a piston down. When they combustion it creates a lot of force, my question is how much force is needed to push the piston all the way down when the vehicle ...
5
votes
2answers
46 views

Engine oil sludge

My question is, have ever heard of it making engine oil gel, or turn sludgy if you can call that a word? I haven't, but 05 Chevy Equinox I'm servicing had this happen. Not sure if it started before or ...
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votes
2answers
47k views

What is the purpose of a drive-shaft?

what is a drive-shaft and why we need it in a car? I do get the point of having crankshaft (using Wikipedia) but still confuse with drive-shaft
2
votes
2answers
33 views

Overheating and more

Hi I have a 2000 Buick park ave v6 3800 series and the problem started as a small leak in the radiator from the little drain plug so I righted that and the leak moved to the whole opposite side of the ...
3
votes
1answer
80 views

Corsa D Stuttering Accelaration with Malfunction Light flashing

I have a 1.2l Vauxhall Corsa D (62 plate) that has done 63K miles. A problem has developed over the last day or two that is becoming a concern, and has got worse over the last 24 hours. Whilst ...
4
votes
1answer
48 views

Heavy noise from the tappet of my RE Classic 350

I own a Royal Enfield Classic 350 (2014 model). After completing 10000 km, I started hearing an irritating sound from the tappet (service guys says so). At that time it didn't last long, so I thought ...
3
votes
4answers
128 views

Diagnostic, diy repair guides, technical manuals

So I was wondering for a list of good diy diagnostic, repair softwares (not obd). I am aware of Autodata, Vivid and Mitchell on Demand. What else do you know? I am also looking for a software that ...
8
votes
2answers
367 views

How to test if oil is leaking into combustion chambers?

How can I test whether oil is leaking into cylinder combustion chambers and getting burnt in case of oil level loss? As opposed to, for example, leaking through the oil pan or the timing chain cover.
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votes
2answers
442 views

How often should spark plug wires be replaced?

I last replaced them with the plugs about 4 years/60-70k miles ago. I bought platinum plugs I if I remember correctly, so I still got some life on those. The car (2001 Buick Regal) is still in good ...
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votes
2answers
9k views

Gas pedal not responding

It just doesn't work, as if I weren't even pressing it and it happens regardless of the speed. I have to turn the engine off and on again and it'll work for another 3 or even up to 20 minutes ...
3
votes
0answers
20 views

2004 isuzu ascender Sputtering and possibly misfiring

Needed to get a smog check so I went to auto zone to find out why the check engine light was on. The code shot out that the map sensor needed to be replaced. So I replaced it and reset the computer by ...
3
votes
1answer
75 views

Why does my car engine rev so fast when running uphill

I have a 2015 Civic EX (6000 miles). It's revving 2000/2500/3000RPM at 70/80/90MPH on flat ground. However, it's having 3000RPM at 60MPH when going uphill and EVERYONE was passing me by (Except for ...
9
votes
3answers
640 views

Is there a difference in cars manufactured for hot or cold climates?

I have one very interesting question. I would like to purchase new Volkswagen Jetta TDI 1.6 2015-2016. I found new car in official dealer store. But there is one problem - These cars were constructed ...
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votes
0answers
132 views

Clunking sounds when decelerating or idle with clutch engaged

I have an issue with a 2010 Opel / Vauxhall Insignia 2.0 CDTI Sports Tourer (aka Buick Regal in the States if I'm not mistaken) and I'm having difficulties pinning it down. It's going to be a lengthy ...
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votes
0answers
53 views

Engine running rough after spirited driving

My car is a 2003 Chevy Impala 3.4L, with just over 200,000mi on it. I've checked the oil, it hadn't been on the road in about a month. My wife and I had a race a few days ago with her in the Impala ...
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votes
3answers
1k views

Why has my car burnt through all the oil?

I have recently run in to trouble with my Vauxhall Corsa 1.2 2013. I broke down the other day after a huge cloud of white smoke out the exhaust followed by a severe loss of power. The AA came had a ...
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votes
3answers
7k views

Static vs. Effective compression: Why does higher effective compression not require higher octane gas?

Background I've been trying to do a lot of research on boost lately because I'm planning on running a moderate turbo setup on my daily/light-duty-autox car in the future. I'm trying to get into the ...
4
votes
0answers
30 views

06 Cobalt - Car dies while driving and won't start back up [closed]

Car dies while driving and won't start back up - turn key no clicking no nothing - all gauges and lights light up - battery charged . Can jump across starter and it starts and dies. One mechanic says ...
7
votes
1answer
127 views

Small crack/gap between cylinders on block

I was doing a head gasket replacement onnmy 86 Kawasaki ninja gpz1000 and I while cleaning the gunk off the top of the block I noticed a small gap/crack in between two cylinders (Pictures are linked ...
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4answers
298 views

Can 100% calculated load be reached in neutral?

While searching for information about how is engine load calculated I came across this question which contains an equation for the ECU load calculations. As I understand it under fixed atmospheric ...
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4answers
3k views

Do pistons keep moving when the car stops?

When you are driving and stop at a light, do the pistons still move up and down due to combustion? If not how will the engine know when to combust the fuel to keep it moving?
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votes
2answers
79 views

How do I remove oil sludge from an installed engine?

What's the preferred, non-chemical/non-additive method for removing oil sludge from an engine that's still installed in the vehicle? I'll have the head and oil pan removed. How do I clean out the ...
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votes
2answers
66 views

Do Front-Wheel Drive cars consume less fuel than Rear-Wheel Drive cars? [closed]

As physics suggests it's more convenient, and thus less energy consuming, to pull a load than to push it. Having said that in a similar situation when two cars are the same in terms of weight, engine, ...
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votes
2answers
121 views

Basic operation of a choke valve

As user Steve Matthews pointed out on my last question Car interior rattles on idle The ideal use of a coke is "Use the choke until the car warms up properly. You can reduce the amount of choke ...
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vote
2answers
447 views

Ford Figo doesn't start after recharging the battery

I have a Ford Figo. I had the battery recharged. Now the car won't start. There is a symbol which has pic of a car and a lock on it and that keeps blinking whenever I try to start and engine doesn't ...
15
votes
3answers
557 views

What is valve float and how does it impact engines?

The Wikipedia entry is hard to grok: Valve float is an adverse condition which can occur at high engine speeds when the poppet valves in an internal combustion engine valvetrain do not properly ...
3
votes
0answers
49 views

Ticking noise which gets faster at idle and slows after blipping

Car: Audi S5 2008 V8 4.2L Transmission: Manual Symptoms: There is a quiet (but noticable) ticking noise which can be heard from inside the cabin when the car starts. It starts of slow (maybe 10 ...
9
votes
1answer
109 views

My feet turn black

I left the pedicure salon, started my car and drove less than 3 miles to pick up something from the store, when I stepped out of my car my feet were black... and I don't meant just from dirt, It ...
8
votes
3answers
63 views

My BMW 325xi smells like gas

It is difficult to start my BMW it runs rough and smells like raw gas from the exhaust pipe. My check engine light is on. What could be the problem? I just had the engine replaced I am over 8,000 ...
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votes
0answers
26 views

My 05 F150 engine knocking

Drove it - reached destination and started knocking - NO oil on dipstick. Put in 5 quarts of oil - ran fine until reached next destination - started knocking again - oil was present this time - drove ...
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vote
1answer
22 views

2006 Dodge Durango 4.7 L V-8 running hot

My 2006 Durango runs hot after a while . It's not losing much coolant. Also if the cap is off and you start it, Iit will blow back water out the opening. I thought it may have a head gasket crack or ...
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0answers
20 views

2011 toyota tundras loses power under load

My 2011 Toyota tundra loses power while under load it doesn't completely shut off but does not respond when pressing gas pedel. This is an occasional thing not constant
3
votes
1answer
19 views

08 Silverado 5.3 engine “click”

I have an 08 Silverado, that has a "click" coming from the engine when it first starts. Once it reaches normal temperature it seems to go away. All the belts look good but beyond that I'm not sure ...
15
votes
4answers
1k views

What does it mean to retard an engine?

I have come across this term. What does it mean to retard an engine? When would you typically have to do such a thing? What can happen if you don't or incorrectly retard the engine? What sort of ...
8
votes
1answer
45 views

2006 VW Jetta TDI EGR cleanup

I am going to cleanup the EGR pipe in my VW Jetta TDI. Are there any special considerations on how to remove the carbon which might be blocking the flow?
11
votes
4answers
2k views

Does putting an automatic car into neutral at stop lights significantly harm the transmission?

I drive a 2013 Mazda 3, in case that makes any difference to the answer. There seems to be a few discussions on the web which indicate that putting an automatic car into neutral does not ...
9
votes
1answer
85 views

Who came up with “suck, squeeze, bang, blow”?

A popular explanation of how a four stroke engine works is Suck, squeeze, bang, blow. The engine sucks in a mixture of fuel and air, then squeezes it together (compresses it), then it burns / ...
1
vote
1answer
31 views

Car interior rattles on idle

My carb Citroën BX interior rattles on idle. This mostly happens before the engine warms up, as soon as I apply the smallest amount of throttle this disappears, which leads me to apply throttle when ...
8
votes
1answer
381 views

Carburettor jetting on installation of aftermarket air filter

I have a 150cc motorcycle and am planning to install an after market air filter(K&N) since the stock one was favoring fuel efficiency and not performance. The bike has a carburetor (Mikuni) not ...
7
votes
2answers
69 views

My 94 Honda Civic..which is a manual..will crank but not start… but it will clutch off

My 94 Honda Civic..which is a 5 speed manual..will crank but not start..It will clutch off and runs and drives well after that. I have to pump the clutch several times before it will even start to ...
4
votes
1answer
154 views

Which engine part is this?

I own a speedboat that is powered by a 5 liter V8 Mercruiser with 200bhp. Yesterday when trying it out for the 1st time this season, 2 things happened: 1 - the boat was always trying to turn left ...
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vote
3answers
27k views

Engine died while driving and won't start again

I have a Hyundai Sonata 2002 automatic which has just broken down. What happened is that while driving the engine suddenly stopped and the check engine light turned on. I attempted to start the engine ...
7
votes
1answer
98 views

Does free revving a diesel engine to 4000 rpm (1.6 crdi- hyundai) cause any damage?

It's a Hyundai CRETA/ ix25 model... clocked 1800kms on the odometer, diesel spec engine 1.6 crdi unit, manual transmission! It has redline at about 4800rpm in the tachometer. When i took it for ...
6
votes
0answers
131 views

Once-only thud knock when open throttle

I have a 1997 Yamaha TRX850. When I open the throttle I'm hearing a thud knock sound near the left crankshaft cover. That sound does not always appears and I can't find any correlation between ...
7
votes
2answers
48 views

How to flush engine coolant system after oil intrusion

My 02 Buick LeSabre has oil coming from the radiator into the coolant reservoir. Just recently I had a new motor put in to fix the issue. What would be the best/proper way to flush the radiator? It ...
6
votes
5answers
1k views

Engine on BMW G650GS 2011 does not start when it's hot

I have a rather strange problem with my BMW G650GS. In the morning, when the engine is cold, it starts fine with a single crank. There is no problem with riding, the engine works fine and never chokes....